001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.broker.jmx;
018
019import java.util.concurrent.Callable;
020import org.apache.activemq.store.PersistenceAdapter;
021
022public class PersistenceAdapterView implements PersistenceAdapterViewMBean {
023
024    private final String name;
025    private final PersistenceAdapter persistenceAdapter;
026
027    private Callable<String> inflightTransactionViewCallable;
028    private Callable<String> dataViewCallable;
029
030    public PersistenceAdapterView(PersistenceAdapter adapter) {
031        this.name = adapter.toString();
032        this.persistenceAdapter = adapter;
033    }
034
035    @Override
036    public String getName() {
037        return name;
038    }
039
040    @Override
041    public String getTransactions() {
042        return invoke(inflightTransactionViewCallable);
043    }
044
045    @Override
046    public String getData() {
047        return invoke(dataViewCallable);
048    }
049
050    @Override
051    public long getSize() {
052        return persistenceAdapter.size();
053    }
054
055    private String invoke(Callable<String> callable) {
056        String result = null;
057        if (callable != null) {
058            try {
059                result = callable.call();
060            } catch (Exception e) {
061                result = e.toString();
062            }
063        }
064        return result;
065    }
066
067    public void setDataViewCallable(Callable<String> dataViewCallable) {
068        this.dataViewCallable = dataViewCallable;
069    }
070
071    public void setInflightTransactionViewCallable(Callable<String> inflightTransactionViewCallable) {
072        this.inflightTransactionViewCallable = inflightTransactionViewCallable;
073    }
074}